Rock crusher and pulverizer.



W. H; PULOHER. ROCK GRUSHER AND PULVBRI ZER.

APPLIUATION FILED NOV. 5, 1967.

Patented Dec, 15, 1908.

WITNESSES m T N V m.

7 ATTORNE W. H. FULGHER. ROCK GRUSHER AND PULVERIZEB. APPLICATION FILED NOV. 5, 1901.

Patented Dec. 15, 1908.

3 SHEETS-SHEET 2.

% MEMO 8v WITNESSES .W. H. FULCHBR. ROCK GRUSHER AND PULVERIZER.

APPLICATION IILED'NOV. 5, 1907.

906,790. Patented Dec. 15, 1908 a 3 SHEETS-SHEET 3.

WITNESSES n4: NORRF PETERS co., wunmuwn, 1:. c4

UNITED sTATEs PATENT OFFICE.

WILLIAM H. FULCHER, OF OAKLAND, CALIFORNIA, ASSIGNOR TO TEDDY .TAW PULVERIZER COMPANY, OF OAKLAND, CALIFORNIA, A CORPORATION OF CALIFORNIA.

ROCK CRUSHEB AND PULVEBIZER.

Specification of Letters Patent.

Patented Dec. 15, 1908.

To all whom it may concern:

Be it known that I, WILLIAM H. FULoHnR, citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in Rock Crushers and Pulverizers, of which the following is a s ecification.

This invention relates to a mil for crushing and pulverizing ore, rock, and. other material.

The object of the invention is to provide an apparatus of this character which shall be simp e in construction, powerful, with amaximum capacity, and capable of ready adjustment as wear takes place; which shall combine with the ordinary crushing, oscillating movement of a rock crusher, an additional sidewise grinding motion of the jaws in opposite directions, for the purpose of pulverizing and grinding the ore or roc The invention consists of the parts and the construction and combination of parts as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure 1 is a side elevation and partial section of the invention. Fig. 2 is a horizontal lan view and section on line XX, Fig. 1.

ig. 3 is an end elevation and section on line YY, Fig. 1. Fig. 4 shows the fulcrum shaft and the cam segments.

A represents a frame-work of suitable description. On this frame-work is hung the crushing jaws 2 by suitable means, as the chains 3. The lower ends of these jaws each fulcrum on a transverse pivot shaft 4, and the ends of each fulcrum shaft are suitably journaled in the grooves of the segmental blocks 5. There is one of these segments 5 for each end of each fulcrum shaft 4, and each segment has a hub portion 6 through which passes a vertical pivot pin 7. The bearings for the segments 5 are sufficiently loose to provide for the necessary vertical motion to which the jaws may be subjected during their reci rocation. The pivot pins 7 pass through s ots in the top and bottom guide channels 8, suitably fixed in the frame. A box or dolly-block 9 fits over each end of each pivot pin 7, and the opposed pairs of these dolly-blocks on each side of the jaws are connected by the right and left threaded tension rods or bolts 10. Thus, by turning all the rods 10 suitably in one direction, the lower ends of the jaws 2 are brought closer together, to compensate for the wear on the crushing faces 2 of the jaws, or to adjust the jaws to crush different sized material. Correspondingly, by turning the rods 10 in the opposite direction, the wearing faces of the jaws are separated. In order to prevent endwise movement or displacement of the bearings and accompanying parts for the lower ends of the jaws, suitable means, as the looking screws 11, may be employed; these screws 11 being appropriately ournaled in a fixed part of the frame and adapted to bear against the rear sides of the dolly-blocks 9.

The grooved segments 5 supporting each jaw, have suitable rack and gear connections 4, throughrods 4, whereby the rocking movements of the segments of each pair are made uniform. The bottoms of the grooves in the segments 5 are preferably made eccentric to the pivots 7, as shown, for the purpose of alternately bringing the lower ends of the jaws closer together and slightly opening them more, at each sidewise movement of the jaws, so that there is a compound crunching and rubbing action on the material proximate to the point .of discharge. The movement of the jaws towards and from each other by the eccentric segments need not exceed a quarter of an inch.

By flexibly supporting the jaws from overhead, as by the chains 3, and fulcruming the lower ends of the jaws on the ro ckable members 5, a lateral oscillation is easily imparted to the jaws by suitably connecting the latter with the line shaft 13. Thus, in Fig. 2, this line shaft extends along one side of the mill, and carries two eccentrics 14 which are suitably connected by the links 15 with the jaws, these connections and eccentrics being so arranged that the jaws will be laterally oscil: lated simultaneously in opposite directions, whereby a perfect grinding movement of the working faces of the jaws will be secured.

The rocking of the jaws on the pivots 4 to secure the crushing action is accomplished b suitable means, as the bent levers 16, whic are 'fulcrumed at 17 each lever carrying) a roller 18 at one end operating on a suita le cam surface of a rigid arm extension 19 ofa jaw 2. The opposite end of each lever 16 is arranged in the ath of a roller-bearing cam 20 mounted on t e cross shaft 21, these cross shafts 21 carrying miter gears 22 engaging corresponding gears 23 of the line shaft 13. The movements of the cams 20 and the-eccentrics 14 are so timed that as the jaws are cl0Sed to crush the material, the lower ends of the jaws at the same time are shifted sidewise in opposite directions, to produce the pulverizing and rubbing action desired in some forms of work for which this mill is par ticularly adapted.

It will be observed that the working faces 2 of the jaws are provided with V-shaped pockets or recesses 24. These pockets are so arranged with respect to one another that they will hold a certain amount of the crushed ore, so that in the grinding action produced by the lateral movement of the jaws, the ore in one pocket will form an opposed or grinding and bearin surface for the ore in the other pocket; and t, us relieve, to a certain extent, the wear on the jaws themselves.

The sides 25 of the mill, between which the jaws operate, are so constructed as to adapt the jaws to their compound crushing and lateral grinding movements, and yet retain uncrushed material between thejaws. As here shown, the sides 25 are made in coacting, hinged, overlapping sections; a section being hinged to each side of each jaw; and the sec.- tions yieldingly pressed in always against the jaws to. form a hopper space, by suitable means, as the springs 26..

The throat portion of the crusher is so constructed that there will always be a slight opening for the discharge of the crushed material from the pockets and from between the jaws, so that there will be no danger of the mill choking.

This invention is not limited in its uses simply to crushing and breaking rock, like most rock crushers and breakers, but it is de: signed for use as a grinding for pulverizing auriferous and other value-bearing ores. By reason of the construction, and of the variousmotions of the jaws, I produce a grinding, pulverizing, jaw mill with a vertical un-r derneath discharge.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1-. In an apparatus of the character described, a pair of jaws flexibly suspended at their upper ends and pivotally supported at their lower ends, means: for rocking the jawstoward and from each other on the said pivots, and means for coordinatelyshifting the jaws sidewise in opposite: directions. during said pivotal movement.

2. In an apparatus of the character described, a pair of: coactingcrushing jaws pivotally supported at one end, means for rocklng the jaws on the pivots towards and from each other, and means for giving the jaws a sidewise grinding movement in opposite; directions'coordinately with the oscillat mg and. crushing movement of thejaws.

3. In a rock crushing apparatus, a pair of crushing jaws, means for rocking the jaws towards and from each other, and means for simultaneously imparting a sidewise grinding motion to the jaws.

4. In a rock crushing mill, a pair of pivoted crushing jaws, the pivots of the jaws mounted in rockable bearings whereby the jaws may have a lateral motion with respect to their plane of oscillation towards and from each other, means for efiecting said lateral motion, and means for oscillating the jaws towards and from each other.

5. In a rock crushing mill, a pair of flexibly suspended jaws, pivots for the jaws, rockable bearings for the pivots, said rockable bearings turning on vertical axes, means for rocking the jaws on said bearings, and.

means for imparting an oscillating motion to the. jaws towards and from each other.

6. In a crushing mill, a pair of crushing jaws, turnable on horizontal pivot shafts towards and from each other, means for efiecting said pivotal movement, grooved segments turnable on vertical axes and supporting said pivot shafts for the jaws, adjustable connections between the opposed segments whereby the jaws are adjustable towards and from each other, and means for giving the jaws a sidewise grinding motion on said segments.

7. A grlnding mill comprising a pair of crushing jaws, flexible supporting means for the top of the jaws, horizontal pivots for the lower ends of the jaws, rockable bearings for said pivots, means for giving the pivoted ends of the jaws a sidewise grinding motion, means for operating the jaws towards: and from each other, and adjustable connections between the bearings for said pivots, whereby the jaws are adjustable towards and fromeach other.

8. In a rockcrushing mill, a pair of crushing jaws, means for giving the aws a crushing motion towards and from each other, means for simultaneously imparting a sidewise grinding motion to the jaws, and means for adjusting the jaws towards and from each other.

9. In an apparatus of the character described, a pair of coacting crushing jaws pivotally supported atone end, means for rocking the jaws on the pivots towards and from each other, means for giving the jaws a sidewise grinding movement in opposite directions coordinately with the oscillating and crushing movement oi the jaws, and yielding'sides betweenwhich the jaws operate.

10. In a rock crushing apparatus, a pair of crushing jaws, means for rocking the jaws towards, and from each other, means for simultaneously imparting asidewise grinding motion to'the jaws, and side members coacting with. the jaws to inclose a hopper space.

11. In a crushing mill, a pair of crushing jaws, turnable on horizontal pivot shafts towards and from each other, means for effecting said turnable movement of the jaws, eccentrically grooved segments turnable on vertical axes and supporting said pivot shafts for the jaws, adjustable connections between the opposed segments whereby the jaws are adjustable towards and from each other, and means for giving the jaws a sidewise grinding motion on said seg; ments.

12. In a crushing mill, a pair of crushing jaws, turnable on horizontal pivot shafts towards and from each other, means for effecting said turnable movement of the jaws, eccentrically grooved segments turnable on vertical axes and supportmg said pivot shafts for the jaws, adjustable connections between the opposed segments whereby the jaws are adjustable towards and from each other, and means for giving the jaws a sidewise grinding motion on said segments, said eccentric grooves being provided with teeth meshing corresponding rack teeth on said pivot shafts.

13. In a rock crusher, a pair of jaws, pivots on which said jaws are rockable, means for rocking the jaws on the pivots, and means for synchronously moving the pivots towards and from each other during the rocking movements of the jaws.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

WILLIAM H. FULOHER. Witnesses:

S. H. N OURSE, C. A. PENFLELD. 

